Dutch phytopathologists have shown that ethylene is vital for the protection of plants against bacteria and fungi. This is another function for the plant hormone already known to play a role in plant aging and fruit ripening.
Bart Geraats from Utrecht University demonstrated that plants which are insensitive for the hormone ethylene are hypersensitive to various microorganisms. The research implies that farmers and horticulturalists must be careful with substances that inhibit the effect of ethylene. Such substances could increase the susceptibility of plants to pathogens.
The researchers produced modified tobacco plants which were insensitive to ethylene. These plants were spontaneously diseased and wilted when grown in ordinary compost. Various fungi and fungi-like microorganisms in the compost attacked the ethylene-insensitive tobacco. These microorganisms do not usually cause diseases in unmodified plants.
Nalinie Moerlie | alfa
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